Protocol for a multicenter prospective cohort study evaluating arthroscopic and non-surgical treatment for microinstability of the hip joint

Table 1 Inclusion criteria

Symptoms	Hip pain
Physical examination	AB-HEER test
	Prone instability test
	HEER test
	Hip flexion + rotation arc ≥ 200°
	Beighton score >4
Imaging	FEAR index > -5°
	Borderline dysplasia • LCE 20° to <25° • ACE 20° to <25° • Tönnis angle >10° to 14°
	Cliff sign
Intra-articular hip injection (mepivacaine)	At least 50% reduction of pain

The inclusion criteria are symptoms of hip pain together with at least one other positive finding on physical examination or imaging suggestive of hip microinstability and at least a 50% reduction in pain following an intra-articular hip injection of Mepivacaine. AB-HEER abduction-hyperextension-external rotation, ACE anterior center edge, HEER hyperextension-external rotation, FEAR Femoro-Epiphyseal Acetabular Roof, LCE lateral center edge

ISSN: 1471-2474